Assessing age-related performance decrements in user interface tasks

Xiaolei Zhou, Shengdong Zhao, M. Chignell, Xiangshi Ren
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引用次数: 5

Abstract

As the computer and internet generations age, there is an increasing need to develop appropriate interfaces for the elderly that can accommodate age-related changes in manual dexterity, visual acuity, and cognitive abilities. Assessment of age effects is typically a necessary first step in designing age-appropriate interfaces, but assessment of age related effects may be complicated by a bias towards accuracy in the elderly or by other differences in how the tradeoff between speed and accuracy is handled by different people. In this paper, we attempt to investigate the effects of aging on performance difference in interacting with computer interfaces. An experiment was conducted to examine age related effects in a steering task. In order to assess the impact of a possible speed-accuracy tradeoff, performance was observed under three different instructional sets i.e., accuracy (A), neutral (N), and speed (S) when steering on a circular track. Experimental results showed that the elderly group performed significantly less accurately for all three instruction sets. The younger subjects were more influenced by instructions to perform faster, or with more accuracy. Cluster analysis of the empirical data individually for both the old and younger participants showed that variability among subjects was much greater in older users than younger users. Implications for user interface design for older users, and for the evaluation of age effects in HCI generally, are discussed.
评估用户界面任务中与年龄相关的性能下降
随着电脑和互联网一代的年龄增长,越来越需要为老年人开发合适的界面,以适应与年龄相关的手灵巧性、视觉敏锐度和认知能力的变化。在设计适合年龄的界面时,评估年龄效应通常是必要的第一步,但对年龄相关效应的评估可能会因为老年人对准确性的偏见或不同人处理速度和准确性之间权衡的其他差异而变得复杂。在本文中,我们试图研究老化对计算机界面交互性能差异的影响。进行了一项实验,以检查年龄对驾驶任务的影响。为了评估可能的速度-准确性权衡的影响,在三种不同的教学设置下观察了在圆形轨道上转向时的表现,即准确性(a),中性(N)和速度(S)。实验结果表明,老年组在所有三个指令集上的表现都明显不准确。年轻的实验对象更容易受到指令的影响,从而表现得更快或更准确。分别对老年和年轻参与者的经验数据进行聚类分析表明,老年用户的受试者之间的变异性要比年轻用户大得多。讨论了对老年用户的用户界面设计的影响,以及对HCI中年龄效应的评估。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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